KR100760772B1 - Wheel hub and a method for mounting such a wheel hub - Google Patents

Abstract

Rolling bearing 19, driven wheels having an outer race wheel 19a arranged to be rotatably mounted in a pair of wheel suspension 20 and inner race wheels 19b, 19c intended to rotate on the wheel axis In a wheel hub for a drive wheel of a vehicle, which is arranged to be mounted on a shaft 10 and fixedly connected to a wheel flange, and a wheel flange 11, the wheel hub of the wheel flange 11 The sleeve portion 12 is arranged between the bearing 19 and the axially protruding portion 13 of the sleeve portion 12, and a relatively small diameter located between the rolling bearing 19 and the wheel shaft 10. Has an axially projecting portion of the outer and inner thin-walled sleeve members 16, 17 when moved axially with respect to each other, a pair of inner and outer thin-walled sleeve portions ( Facing each other to increase the outer diameter of A wave shaped lamp 18 at one envelope surface, the sleeve member 17 of one of the inner and outer thin walled sleeve members 17, 16 has an axial displacement of the sleeve portion 12. The other one of the inner and outer thin wall sleeve members 17, 16 is arranged during mounting, and the sleeve portion 12 of the bearing 19 and the wheel flange 11 is intended to be mounted. Upon reaching the internal spacing and preload, it comes into contact with the axially deformable mechanical part 22 arranged to elastically deform.

Description

Wheel hub and manufacturing method of wheel hub {WHEEL HUB AND A METHOD FOR MOUNTING SUCH A WHEEL HUB}

The invention will be further described according to the embodiment shown in the drawings.

1 is a cross-sectional view of a conventional wheel hub for a drive front wheel of a vehicle.

2 is a cross-sectional view showing a portion of a wheel hub according to the invention at a stage prior to final installation;

3 shows a corresponding view of the wheel hub according to FIG. 2 in the mounted position;

4 shows a portion of the wheel suspension and the entire hub, showing the relatively large sized state shown in FIG.

<Description of the symbols for the main parts of the drawings>

10: wheel axle

11: wheel flange

12: sleeve part

18: lamp

19: rolling bearing

19a: outer race wheel

19b, 19c: internal track

20: Suspension

The present invention relates to a wheel hub for a drive wheel of a vehicle and a method for mounting the wheel hub.

It is an object of the present invention that the hub unit and the rolling bearing connected thereto have the correct internal clearance and preload so that the wheel hub is realized as defined in the appended claim 1. Another object is to provide a wheel hub for a driving wheel of a vehicle that is easily mounted.

The invention relates to a method consisting of the features defined in claim 7 and to a method for mounting a wheel hub.

1 is connected to a wheel flange 5 by a spline joint 4 in the embodiment shown, alternately a wheel rim 6 is attached by bolts, and a constant velocity joint (constant velocity joint, 2) (CVJ) the rotational movement of the drive shaft is transmitted to the wheel axle (3), the bearing device for the drive front wheel of the vehicle comprising a drive shaft (1) And the conventional shape of the hub. The wheel axle 3 and the parts connected thereto are rotatably supported in two rows of angular contact ball bearings 7, in the illustrated embodiment the axial portion of the wheel flange 5 and the shoulder on the wheel axle. It is clamped between the shoulders and has a single part inner race ring fitted to the wheel shaft 3. The outer race wheel of the bearing 7 is arranged rotatably in position at the wheel suspension 8. The two rows of angular contact ball bearings 7 in the conventional shape according to FIG. 1 have a single part inner ring and a single part outer ring.

2 shows a section of a CVJ 9 comprising an integrated wheel axle 10 and a cross section of a hub portion and a bearing arrangement according to the invention shown in simplified form. The wheel flange 11 has a relatively small diameter portion 13 at the outer envelope surface at the opposite axial end spaced from the wheel flange 11 as shown in FIG. 4, and is substantially It is integral with the cylindrical sleeve portion 12 and includes an axial shoulder 14 positioned between the relatively small diameter portion 13 and the rest of the cylindrical sleeve portion 12. do. The cylindrical sleeve portion 12 is fixed to follow the rotation of the wheel shaft 10 by means not shown (spline joint shown in FIG. 1) or by a key joint or the like. The axial shoulder 14 is located adjacent to the relatively small diameter portion 13 provided with a shallow collar 15. The relatively small diameter portion 13, which is axially connected to the collar 15, has a thin walled sleeve member 17 inside the pair of thin-walled sleeve members 16, 17. Is provided, the sleeve members 16, 17 have a series of tapering wave-shaped ramps 18 on the surfaces facing each other, and the sleeve members 16, 17) are axially movable relative to each other, thereby increasing the size of the outer diameters of the two thin walled sleeves 16, 17 when moved in one direction relative to each other, and moving in opposite directions to each other. When the size of the outer diameter is reduced. The outer envelope surface of the sleeve 17 of one of the two thin-walled sleeves serves as a seat for the bearing 19 formed by two rows of angular contact ball bearings, the two rows of balls having a common outer It has a raceway wheel 19a and a split inner race ring 19b, 19c.

When mounting the wheel hub on the wheel axle 10, the bearings are two inner raceways 19b, 19c spaced axially on the outer envelope surface of the pair of thin walled sleeve members 16, 17. The outer race wheel 19a is positioned at a portion of the wheel suspension 20 (only shown in FIG. 4) in which the outer race wheel is locked by a locking washer 21 or the like. Is pressurized.

In this position, the inner sleeve of the two thin walled sleeves 17 is adjacent to the collar 15 comprising one of the axial ends while the outer thin walled sleeve comprises an opposite axial end ( 16 has an inner rim in contact with the shoulder 23 on the CVJ 9 and is closely connected to the outer rim of a taping washer 22 arranged around the wheel axis 10. In the position shown in FIGS. 2 and 4, the side of the inner race wheel 19c located closest to the shoulder 23 of the CVJ 9 is spaced apart from the shoulder at an interval d, and the interval d is two It is equal to the distance between the inner race wheels 19b and 19c and is equal to the taper of the tapered washer 22, ie the axial distance between the inner and outer rims of the tapered washer.

As the wheel flange 11 and the cylindrical sleeve portion 12 are pressed upwards on the wheel shaft 10, ie to the right in FIGS. 2 to 4, the shoulder 14 is driven to the raceway 19b of the bearing 19. Will be compressed relative to one of the raceways, at the same time the collar 15 will move the inner thin-walled sleeve 17 to the right, which causes the outer of the inner thin-walled sleeve 17 to The wave shaped lamp 18 at the envelope surface is moved relative to the lamp 18 at the inner envelope surface of the outer thin walled sleeve 16 and a pair of thin walled sleeves 16, 17. The combined radial size of will be increased, between the inner race wheels 19b, 19c of the bearing 19 and the relatively small diameter portion 13 of the cylindrical sleeve portion 12 and the wheel shaft 10 and the cylindrical sleeve portion. The grip between the relatively small diameter portions 13 of 12 is increased.

While the wheel flange is being moved, the outer thin-walled sleeve 16 will acquire a force component from the part that comes into contact with the inner thin-walled sleeve 17 and thereby the outer of the tapered washer 22. Pressure is generated from the outer thin walled sleeve 16 against the rim, which is then formed progressively flat to the position shown in FIG. 3, which is substantially planar. The side of the inner race wheel 19c located closest to the shoulder 23 of the CVJ 9 thus makes contact with the shoulder 23 and the space between the two inner race wheels 19b, 19c. Is removed. This state is shown in FIG. 3, where the two inner race wheels are located on the side facing each other in close contact.

This ascertains the preload on the bearings necessary for correct operation.

In the mounted position shown in FIG. 3, the washer 22 is tensioned, thereby applying pressure to flatten the original tapered washer, which can then be used for dismantling the wheel hub. have.

The present invention is not limited to the described embodiments and the embodiments shown in the accompanying drawings, and variations and modifications may be formed within the scope of the appended claims.

Claims (7)

Rolling bearing 19, driven wheel shaft having an outer race wheel 19a arranged to be rotatably mounted in a portion of the wheel suspension 20 and the inner race wheels 19b, 19c intended to rotate on the wheel axis. A wheel hub for a drive wheel of a vehicle, which is arranged to be mounted in a fixed state on (10) and comprises a sleeve portion 12 and a wheel flange 11 securely connected to the wheel flange The sleeve portion 12 of the wheel flange 11 is arranged between the axially protruding portion 13 of the sleeve portion 12 and the bearing 19, and between the rolling bearing 19 and the wheel shaft 10. Having relatively small diameter axially projected portions positioned, the outer and inner thin-walled sleeve members 16, 17, when moved axially relative to one another, have a pair of inner and outer thin Having a ramp-shaped ramp 18 at the envelope surfaces facing each other to increase the outer diameter of the wall portions 17, 16 of the wall structure, the inner and outer thin walled sleeve members 17, The sleeve member 17 of one of the 16 is arranged during mounting along the axial displacement of the sleeve portion 12, and the other of the inner and outer thin walled sleeve members 17, 16. One sleeve member is a sleeve part of the bearing 19 and the wheel flange 11 12 is intended, when it in the internal space and the preload burnt possible deformation in the axial direction arranged so as to be deformed in a machine part (machine component, 22) and the wheel hub, characterized in that to form the contact. 2. The collar according to claim 1, wherein the inner thin-walled sleeve (17) comprising one of the axial ends is provided in the axially projecting portion (13) of the sleeve portion (12) of the wheel flange (11). Adjacent to (15), whereby the displacement of the axially projecting portion (13) is formed along the axial displacement in one direction. 3. The deformable mechanical part (22) according to claim 2, wherein the deformable mechanical part (22) has an inner rim of the tapered washer in contact with the fixed shoulder (23) and is constituted by a tapered washer provided around the wheel shaft (1), while the tapered washer The outer rim of the outer wall of the sleeve member 16 of the outer thin wall structure relative to the axial end adjacent to the collar 15 in the flange 13 protruding in the axial direction of the inner thin wall structure sleeve member 17 Wheel hub characterized in that connected by opposite axial ends. 4. The tapered washer (22) according to claim 3, wherein the tapered washer (22) sets the axial distance between the inner and outer rims corresponding to the mounting distance (d) necessary for the axial displacement of the axially projecting portion (13) in the mounting position. Wheel hub characterized in that it has. 5. The rolling bearing 19 according to claim 4, wherein the rolling bearing 19 has one outer raceway wheel 19a and split inner raceway wheels 19b, 19c consisting of two parts, the two inner raceway parts having a tapered washer 22. Wheel hub, characterized in that it is located at a mutual distance d corresponding to the axial distance between the inner rim and the outer rim. 6. The bearing (19) according to claim 5, wherein the bearing (19) is two rows of angular contact double bearings with race tracks for one row of balls provided on one of the inner race wheel portions 19b and the common outer race wheel 19a, A wheel hub, characterized in that race tracks for the outer row of balls are provided to the other race wheels (19c) of the inner race wheel portion and the common outer race wheel (19a). A method for mounting a wheel hub of the type as defined in claim 1, the method comprising An elastically deformable mechanical member 22 is located on the wheel shaft 10 having one part with respect to a fixed stop 23 and the bearing 19 and a pair of inner and outer thin walls. The wheel hub comprising the sleeve members 17, 16 of the structure and the wheel flange 11 with the sleeve parts 12, 13 is provided between the fixed stop 23 and the bearing race wheels 19b, 19c. Mounting the wheel hub, characterized in that it presses upwards on the wheel shaft 10 until there is a space d, and the wheel flange 11 further presses in the axial direction until the deformable mechanical member is completely deformed. Way.

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